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sqlz.go
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sqlz.go
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// Package sqlz contains core types such as Kind and Record.
package sqlz
import (
"context"
"database/sql"
"github.com/neilotoole/sq/libsq/core/errz"
)
// Execer abstracts the ExecContext method
// from sql.DB and friends.
type Execer interface {
// ExecContext is documented by sql.DB.ExecContext.
ExecContext(ctx context.Context, query string, args ...any) (sql.Result, error)
}
// Queryer abstracts the QueryContext and QueryRowContext
// methods from sql.DB and friends.
type Queryer interface {
// QueryContext is documented by sql.DB.QueryContext.
QueryContext(ctx context.Context, query string, args ...any) (*sql.Rows, error)
// QueryRowContext is documented by sql.DB.QueryRowContext.
QueryRowContext(ctx context.Context, query string, args ...any) *sql.Row
}
// Preparer abstracts the PrepareContext method from sql.DB and
// friends.
type Preparer interface {
// PrepareContext is documented by sql.DB.PrepareContext.
PrepareContext(ctx context.Context, query string) (*sql.Stmt, error)
}
// DB is a union of Execer, Queryer and Preparer. DB's method
// set is implemented by sql.DB, sql.Conn and sql.Tx.
// This can probably be better named, as it conflicts
// with sql.DB.
type DB interface {
Execer
Queryer
Preparer
}
// ExecAffected invokes db.ExecContext, returning the count of rows
// affected and any error.
func ExecAffected(ctx context.Context, db Execer, query string, args ...any) (affected int64, err error) {
var res sql.Result
res, err = db.ExecContext(ctx, query, args...)
if err != nil {
return affected, errz.Err(err)
}
affected, err = res.RowsAffected()
if err != nil {
return affected, errz.Err(err)
}
return affected, nil
}
// Canonical driver-independent names for "table" and "view".
const (
TableTypeTable = "table"
TableTypeView = "view"
)